How many searchs are there?

Answer 1

There are 70,000. Most are specialized for one type of information.

There are three primary search engines today with varying degrees of popularity and market share -- Google (70%) Yahoo! (20%) Bing (10%). While there are hundreds of other secondary search engines available, most if not all of them pull their results from one or more of the big 3 above.

There are new search engines every day coming out.